[bug #24268] echo is off in terminal after interrupting the password entry using :ext and ssh

[Johannes Dewender]

Follow-up Comment #5, bug #24268 (project cvs):

I checked ps. I can find entries for ssh when I run "cvs update", but they
vanish right after I interrupt.

I also checked an ubuntu machine with cvs 1.12.13 and there was no problem
with echo. However, this is not about the version. Installing cvs 1.12.13 on
my system didn't help.

So this is something somewhat system dependent.

I don't know if it helps or not, but:

(I am testing with a local test repo now)
$ cvs -t update
 -> main loop with CVSROOT=:ext:localhost:/home/jonnyjd/cvsroot
 -> Starting server: ssh localhost cvs server 
jonnyjd@localhost's password: cvs [update aborted]: received interrupt
signal
 -> Lock_Cleanup()
cvs [update aborted]: received interrupt signal
 -> Lock_Cleanup()


$gdb --args cvs update
...
0xb7fd4424 in __kernel_vsyscall ()
cvs [update aborted]: received interrupt signal
(gdb) bt
#0  0xb7fd4424 in __kernel_vsyscall ()
#1  0xb7c66073 in __read_nocancel () from /lib/libc.so.6
#2  0xb7c0f8de in _IO_new_file_underflow () from /lib/libc.so.6
#3  0xb7c1128b in _IO_default_uflow_internal () from /lib/libc.so.6
#4  0xb7c12698 in __uflow () from /lib/libc.so.6
#5  0xb7c0c1bf in getc () from /lib/libc.so.6
#6  0x080503ea in stdio_buffer_input ()
#7  0x0805095f in buf_read_line ()
#8  0x0805406d in read_line ()
#9  0x08054528 in get_server_responses ()
#10 0x080594b4 in start_server ()
#11 0x080a0df3 in update ()
#12 0x08076a4b in main ()

gdb catches the interrupt and the echo problem doesn't occur, while running
with gdb, by the way.

I compiled a package from source myself, so I wouldn't have a problem testing
a patched version with some debug info or similar on my system.
I am not really experienced with interrupts/signals, though.

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